Enable L2 cache for MPC8568MDS board

The L2 cache size is 512KB for 8568, print out the correct informaiton.

Signed-off-by: Haiying Wang <Haiying.Wang@freescale.com>
diff --git a/include/configs/MPC8568MDS.h b/include/configs/MPC8568MDS.h
index d5a14fc..ba744e9 100644
--- a/include/configs/MPC8568MDS.h
+++ b/include/configs/MPC8568MDS.h
@@ -63,9 +63,9 @@
 /*
  * These can be toggled for performance analysis, otherwise use default.
  */
-/*#define CONFIG_L2_CACHE*/		    	    /* toggle L2 cache 	*/
-#define CONFIG_BTB						/* toggle branch predition */
-#define CONFIG_ADDR_STREAMING		    /* toggle addr streaming   */
+#define CONFIG_L2_CACHE				/* toggle L2 cache 	*/
+#define CONFIG_BTB				/* toggle branch predition */
+#define CONFIG_ADDR_STREAMING			/* toggle addr streaming   */
 
 /*
  * Only possible on E500 Version 2 or newer cores.